Privacy Policy
Mark::Blocks respects your privacy. This page explains how the app and this website collect, store and process information. Last updated: 2026-09-26.
Overview
Mark::Blocks is a local-first Markdown editor. It does not store your documents outside your device, has no account system, and contains no telemetry, crash reporting or ad SDKs. We never sell your data.
Documents & Local Data
- The Markdown documents you write and open are saved only where you choose; autosave, save-as and HTML export all happen locally.
- App settings (accent color, preview background, autosave frequency, image cache size, etc.) are stored in the app's local data and are removed when the app is uninstalled.
Online Image Cache
Starting with 2.3.0, the preview offers an online image cache. When an HTTP/HTTPS image referenced by your document scrolls near the viewport, the app downloads it directly from the image's server and caches the response in the app-private folder LocalFolder/OnlineImageCache (named by the SHA-256 of the URL) for reuse by the same document and later sessions. What you should know:
- Download requests go directly from the app to the image's server. The target server (and its CDN) can see your network address and the requested image URL — no different from opening that image in a browser.
- The cache defaults to a 128 MB cap, adjustable in settings; set it to 0 to disable completely and clear existing data. Cache files never leave your device.
- Your documents are never modified: Markdown sources and exported HTML always keep the original image URLs — cache paths are never written.
- The cache only stores images you actually browse to. It is not an offline downloader and never uploads your documents or images to any third party.
Permissions
- File access: only for documents you explicitly open or save through the file pickers.
- Network access: only for the online image cache downloads described above. The app never sends data to the developer or third-party servers.
This Website
This site is a fully static page set: no tracking cookies, no analytics or statistics scripts.
Children
Mark::Blocks does not collect data from any age group, and collects no personal data at all.
Changes to This Policy
If app changes require updates to this policy, we will publish the new version on this page with the revision date.
Contact
Questions about this policy or data handling? Please open an issue on GitHub Issues.